A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) are provided. The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to embodiments of the present disclosure, The system includes a base station having a large number of transmission antennas of a two dimensional (2D) antenna array structure can prevent excessive feedback resource allocation for transmitting channel state information reference signals (CSI-RSs) and increase of channel estimation complexity of a terminal, and the terminal can effectively measure channels of a large number of transmission antennas and can report to the base station feedback information configured through the measurement.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for transmitting a channel state information reference signal (CSI-RS) in a communication system, the method comprising: transmitting CSI-RS configuration information including first configuration information on a first CSI-RS subgroup and second configuration information on a second CSI-RS subgroup to a terminal, the first CSI-RS subgroup being associated with first plural CSI-RS antenna ports and the second CSI-RS subgroup being associated with second plural CSI-RS antenna ports; transmitting CSI-RSs based on the CSI-RS configuration information to the terminal; and receiving feedback information obtained based on the CSI-RSs from the terminal, wherein resources for the first CSI-RS subgroup and resources for the second CSI-RS subgroup is time division multiplexed or frequency division multiplexed.
2. The method of claim 1 , wherein the resources for the first CSI-RS subgroup are allocated in each odd resource blocks (RBs) and the resources for the second CSI-RS subgroup are allocated in each even RBs, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each RBs.
3. The method of claim 1 , wherein the resources for the first CSI-RS subgroup are allocated in each odd subframes and the resources for the second CSI-RS subgroup are allocated in each even subframes, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each subframes.
4. The method of claim 1 , wherein the first configuration information includes configuration on a first CSI-RS resource which includes a first CSI configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS resource, and wherein the second configuration information includes configuration on a second CSI-RS resource which includes a second CSI configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS resource.
5. The method of claim 1 , wherein the first configuration information includes a first CSI-RS configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS configuration, and wherein the second configuration information includes a second CSI-RS configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS configuration.
6. A method for receiving a channel state information reference signal (CSI-RS) in a wireless communication system, the method comprising: receiving CSI-RS configuration information including first configuration information on a first CSI-RS subgroup and second configuration information on a second CSI-RS subgroup from a base station, the first CSI-RS subgroup being associated with first plural CSI-RS antenna ports and the second CSI-RS subgroup being associated with second plural CSI-RS antenna ports; receiving CSI-RSs based on the CSI-RS configuration information from the base station; and transmitting feedback information obtained based on the CSI-RSs to the base station, wherein resources for the first CSI-RS subgroup and resources for the second CSI-RS subgroup is time division multiplexed or frequency division multiplexed.
7. The method of claim 6 , wherein the resources for the first CSI-RS subgroup are allocated in each odd resource blocks (RBs) and the resources for the second CSI-RS subgroup are allocated in each even RBs, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each RBs.
8. The method of claim 6 , wherein the resources for the first CSI-RS subgroup are allocated in each odd subframes and the resources for the second CSI-RS subgroup are allocated in each even subframes, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each subframes.
9. The method of claim 6 , wherein the first configuration information includes configuration on a first CSI-RS resource which includes a first CSI configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS resource, and wherein the second configuration information includes configuration on a second CSI-RS resource which includes a second CSI configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS resource.
10. The method of claim 6 , wherein the first configuration information includes a first CSI-RS configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS configuration, and wherein the second configuration information includes a second CSI-RS configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS configuration.
11. A base station for transmitting a channel state information reference signal (CSI-RS) in a wireless communication system, the base station comprising: a transceiver; and a controller coupled with the transceiver and configured to: transmit CSI-RS configuration information including first configuration information on a first CSI-RS subgroup and second configuration information on a second CSI-RS subgroup to a terminal, the first CSI-RS subgroup being associated with first plural CSI-RS antenna ports and the second CSI-RS subgroup being associated with second plural CSI-RS antenna ports, transmit CSI-RSs based on the CSI-RS configuration information to the terminal, and receive feedback information obtained based on the CSI-RSs from the terminal, wherein resources for the first CSI-RS subgroup and resources for the second CSI-RS subgroup is time division multiplexed or frequency division multiplexed.
12. The base station of claim 11 , wherein the resources for the first CSI-RS subgroup are allocated in each odd resource blocks (RBs) and the resources for the second CSI-RS subgroup are allocated in each even RBs, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each RBs.
13. The base station of claim 11 , wherein the resources for the first CSI-RS subgroup are allocated in each odd subframes and the resources for the second CSI-RS subgroup are allocated in each even subframes, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each subframes.
14. The base station of claim 11 , wherein the first configuration information includes configuration on a first CSI-RS resource which includes a first CSI configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS resource, and wherein the second configuration information includes configuration on a second CSI-RS resource which includes a second CSI configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS resource.
15. The base station of claim 11 , wherein the first configuration information includes a first CSI-RS configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS configuration, and wherein the second configuration information includes a second CSI-RS configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS configuration.
16. A terminal for receiving a channel state information reference signal (CSI-RS) in a wireless communication system, the terminal comprising: a transceiver; and a controller coupled with the transceiver and configured to: receive CSI-RS configuration information including first configuration information on a first CSI-RS subgroup and second configuration information on a second CSI-RS subgroup from a base station, the first CSI-RS subgroup being associated with first plural CSI-RS antenna ports and the second CSI-RS subgroup being associated with second plural CSI-RS antenna ports, receive CSI-RSs based on the CSI-RS configuration information from the base station, and transmit feedback information obtained based on the CSI-RSs to the base station, wherein resources for the first CSI-RS subgroup and resources for the second CSI-RS subgroup is time division multiplexed or frequency division multiplexed.
17. The method of claim 16 , wherein the resources for the first CSI-RS subgroup are allocated in each odd resource blocks (RBs) and the resources for the second CSI-RS subgroup are allocated in each even RBs, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each RBs.
18. The terminal of claim 16 , wherein the resources for the first CSI-RS subgroup are allocated in each odd subframes and the resources for the second CSI-RS subgroup are allocated in each even subframes, and wherein locations of time-frequency resources of the first CSI-RS subgroup and the second CSI-RS subgroup are same in each subframes.
19. The terminal of claim 16 , wherein the first configuration information includes configuration on a first CSI-RS resource which includes a first CSI configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS resource, and wherein the second configuration information includes configuration on a second CSI-RS resource which includes a second CSI configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS resource.
20. The terminal of claim 16 , wherein the first configuration information includes a first CSI-RS configuration associated with the first plural CSI-RS antenna ports and time comb information or frequency comb information for the first CSI-RS configuration, and wherein the second configuration information includes a second CSI-RS configuration associated with the second plural CSI-RS antenna ports and time comb information or frequency comb information for the second CSI-RS configuration.
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November 30, 2018
December 3, 2019
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